Enum rustc_resolve::macros::MacroRulesScope
source · pub(crate) enum MacroRulesScope<'a> {
Empty,
Binding(&'a MacroRulesBinding<'a>),
Invocation(LocalExpnId),
}
Expand description
The scope introduced by a macro_rules!
macro.
This starts at the macro’s definition and ends at the end of the macro’s parent
module (named or unnamed), or even further if it escapes with #[macro_use]
.
Some macro invocations need to introduce macro_rules
scopes too because they
can potentially expand into macro definitions.
Variants§
Empty
Empty “root” scope at the crate start containing no names.
Binding(&'a MacroRulesBinding<'a>)
The scope introduced by a macro_rules!
macro definition.
Invocation(LocalExpnId)
The scope introduced by a macro invocation that can potentially
create a macro_rules!
macro definition.
Trait Implementations§
source§impl<'a> Clone for MacroRulesScope<'a>
impl<'a> Clone for MacroRulesScope<'a>
source§fn clone(&self) -> MacroRulesScope<'a>
fn clone(&self) -> MacroRulesScope<'a>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<'a> Debug for MacroRulesScope<'a>
impl<'a> Debug for MacroRulesScope<'a>
impl<'a> Copy for MacroRulesScope<'a>
Auto Trait Implementations§
impl<'a> !RefUnwindSafe for MacroRulesScope<'a>
impl<'a> !Send for MacroRulesScope<'a>
impl<'a> !Sync for MacroRulesScope<'a>
impl<'a> Unpin for MacroRulesScope<'a>
impl<'a> !UnwindSafe for MacroRulesScope<'a>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 16 bytes
Size for each variant:
Empty
: 0 bytesBinding
: 12 bytesInvocation
: 4 bytes